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Method and base station for controlling interference

A technology of inter-cell interference between base stations and cells, applied in multiplexing communication, orthogonal multiplexing system, power management and other directions to achieve good QoS effect

Active Publication Date: 2015-01-14
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] It is an object of the present invention to solve at least some of the problems outlined above and to enable reduction of inter-cell interference for uplink transmission of signals to UEs in DRX mode

Method used

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  • Method and base station for controlling interference
  • Method and base station for controlling interference

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Embodiment Construction

[0026] Briefly, a solution is provided to make less inter-cell interference between transmissions in different neighboring cells for a UE in DRX mode. This can be achieved by coordinating the use of DRX schemes for UEs in mutually adjacent cells such that the active DRX periods for downlink transmission of signals for UEs are separated in time between different cells. The base stations of the serving cell thus send signals one at a time to the UEs in their respective cells in turn. In the following text it is often meant that different base stations serve different cells, although a base station such as a NodeB or e-NodeB may serve more than one cell (such as a set of contiguous sectored cells) depending on the network configuration. Signaling means any sending of data or control messages.

[0027] It will now be viewed from the perspective of a process with actions performed in a base station, and with reference to image 3 Flowchart in to explain the solution. The base sta...

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Abstract

A method and base station (600) of a first cell (602), for- controlling inter-Gail interference in a cellular network when Discontinuous Reception, DRX, is applied for User Equipments, UEs. The base station selects a DRX scheme with active periods that are separated in time from active periods of a DRX scheme used for UEs in DRX mode in a neighbouring second cell (806). The selected DRX scheme is then used for a first UE (604) in DRX mode in the first cell to avoid interference between transmissions of signals in the active periods to the first UE in the first cell and transmissions of signals in active periods to the UEs in the neighbouring second cell.

Description

technical field [0001] The present disclosure generally relates to a method of serving a first cell in a cellular network and a base station for controlling inter-cell interference in a cellular network such that interference between a first cell and one or more neighboring cells can be suppressed in a useful manner reduce or avoid. Background technique [0002] In cellular networks for wireless communication, it is a well-known problem that interference caused by signals transmitted to or from user equipment UE in adjacently located cells often occurs in the cells. In such networks, the available radio bandwidth is limited, and in order to provide capacity for communication in a network with multiple cells, resources related to the radio bandwidth must be reused in cells at sufficient mutual distances , so as not to impede communication with each other through interference. In this context, cells located in the vicinity of the serving cell are generally referred to as "ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J11/00H04W76/04
CPCH04W52/0216H04W76/048H04J11/0056H04W76/28Y02D30/70H04L5/0032
Inventor 王洪伟J·曼索尔
Owner TELEFON AB LM ERICSSON (PUBL)